AIB called on NCAA to enhance the enforcement of the regulations with regards to the implementation of operators approved personnel training programme and intensification of its safety oversight function on the airline to ensure that flight operations were carried out in accordance with approved operations manuals in line with the provisions of Nigeria Civil Aviation Regulations (NCARs).

Others were improved safety oversight on the affected carrier to ensure staff welfare issues, and that remunerations were settled promptly and the establishment of Confidential Voluntary Reporting System, which must be implemented in line with the State Safety Program.

On the two Bristow Helicopters serious incidents at the Addax Base Helipad, Calabar in Cross River State on November 12, 2009, like Associated Airways, the bureau also made four safety recommendations.

AIB recommended that the regulatory agency should ensure that Calabar Base Helipad Manual of APDNL be reviewed to comply with Nigeria Civil Aviation Regulations (NCARs), APDNL should ensure that helicopters are properly parked in designated locations, APDNL should ensure that Helicopter Landing Officers (HLOs) are always present during aircraft operations and the agency should ensure that helicopter flight operations at the Helipad were done in accordance with Nig. CARs.

AIB in the report, however, stated that NCAA responded to the safety recommendations of the bureau and implemented them.

On the Aero Contractors incident with NAHCO aviance baggage loader vehicle fleet L3-23 and a parked Bombardier DHC-8-400 aircraft of Aero Contractors,

AIB in its report said the NAHCO personnel who operated the baggage loader vehicle was neither employed to operate the vehicle, nor was he authorised to do so.

The report observed that the rostered driver of the baggage loader vehicle was not available at the time of the occurrence and cited the non-adherence to NAHCO Safe Operating Procedures by the Ramp manager as one of the contributory factors to the incident.

It also made four safety recommendations to NCAA, which included ‘strict adherence to NAHCO’s Standard Operating Procedures’ and ‘Air Operators’ Certificate (AOC) holders should determine the minimum number of personnel for airline ground handling operations to be deployed for each aircraft type.’

On the Westlink Airlines’ Piper Aztec 23-250 aircraft accident, AIB identified inadequate visual lookout and failure to avoid the obstacle by the pilots as the only causal factor responsible for the accident.

The contributory factors included less than adequate planning and preparation for the flight, inadequate pilot training and experience on agricultural aerial work and limited regulatory guidance and oversight on agricultural operations.

It also made four safety recommendations to NCAA in its report.

The report also included two NCAT serious incidents that occurred on May 23, 2012 and October 4, 2012 in Kaduna State, which generated eight safety recommendations.